On the minimum routing cost clustered tree problem

CW Lin, BY Wu - Journal of Combinatorial Optimization, 2017 - Springer
For an edge-weighted graph G=(V, E, w) G=(V, E, w), in which the vertices are partitioned
into k clusters R={R_1, R_2, ..., R_k\} R= R 1, R 2,…, R k, a spanning tree T of G is a …

Distributed local multi-aggregation and centrality approximation

B Dissler, S Holzer, R Wattenhofer - arxiv preprint arxiv:1605.06882, 2016 - arxiv.org
We study local aggregation and graph analysis in distributed environments using the
message passing model. We provide a flexible framework, where each of the nodes in a set …

An Approximation Algorithm for Star p-Hub Routing Cost Problem

SY Hsieh, LH Chen, W Lu - International Computer Symposium, 2018 - Springer
Given a metric graph G=(V, E, w), a center c ∈ V, and an integer p, we discuss the Star p-
Hub Routing Cost Problem in this paper. We want obtain a depth-2 tree which has a root …